Island



(No Model.)

H. G. WOOD. TYPE WRITING MACHINE PLATEN.

No. 599,099. Patented Dec. .28, 1997.

ATTORNEW away at one end to exhibit the interior thereand usefulImprovements in Rollers for Typea full, clear, and exact specification.

UNITED STATES v Prion.

ATENT TYPE=WRITING-MACHINE PLATEN.

SPECIFICATION forming part of Letters Patent No. 596,099, dated December28, 1897. Application filed April 5, 1894. Serial No. 506,404. (Nomodel.)

To aZZ whom, i2 may concern.-

Be it known that I, HORATIO G. WOOD, of Newport, in the county ofNewport and State of Rhode Island, have invented certain new WVritingMachines, of which the following is This invention relates to thetype-impression rollers of type-writing machines, and has for its objectto provide a device of this char acter in which the noise caused bycontact of the type-hammers with the roller may be deadened or evenentirely removed and by which it may also be possible to provide apartiallyyielding surface to the type-hammers to prevent the tearing orcutting into the paper by the hammers, a further object of the inventionbeing to provide such a roller as may be both serviceable and durableand at the same time light of weight.

The invention consists in the novel construction and arrangements ofparts hereinafter more fully described and particularly set forth.

In the accompanying drawings, forming part of this specification, inwhich like letters of reference designate corresponding partsthroughout, Figure 1 is a perspective view of a roller embodying myinvention. Fig. 2 is a side elevation of the same partially cut of. Fig.3 is a vertical cross-section on the line 00 at, Fig. 2.

In the practice of myinvention I form a hollow cylindrical body A ofslightly less than the usual diameter, and which cylinder I fill almostto the mouth at each end with a plaster-of-paris core B. Within thecylinder at each end Isecure plugs 0, having spindles D formed thereon,which said spindles serve as journals for the roller.

Upon the outside of the cylinder A, I secure a covering E of felt orsimilar flexible material, and over this covering E, I tightly secure anouter casing F, which is of rubber, preferably semi-elasticsuch as, forexample, the rubber cloth used for blankets.

I prefer to form the cylinder A of aluminium in order that the rollermay be extremely light for convenience where used upon such, machines asrequire constant lifting of the carriage.

The felt and rubber coverings deaden the sound of the type-hammers whichstrike the roller as the machine is operated, and the rubber coveringserves also to prevent the digging of the type-faces into the paper uponthe roller by providing a partially-elastic surface to receive the blowsofthe type-hammers.

The plaster-of-paris core prevents any vibratory sound which might bepresent were the roller absolutely hollow. Itwill be understood,however, that any other suitable composition may be employed instead ofthe plaster-of-paris.

I do not confine myself to the exact form, material, and details ofconstruction herein set forth, as the same maybe changed or varied atpleasure.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A platen for type-writing machines consisti'ng of a hollow core,provided interiorly with a sound-deadening filling, and a sheath orcovering.

2. A platen for type-writing machines consisting of a hollow core,provided interiorly and exteriorly with sound-deadening fillings, and asheath or covering.

3. An impression-roller for type-writing machines consisting of a hollowcylinder having a plaster-of-paris core therein, and a felt coveringthereon, and a semi-elastic outer casing, substantially as shown anddescribed.

4. An impression-roller for type-writing machines consisting of a hollowaluminium cylinder having a plaster-of-paris core and a felt coveringthereon, and an outer casing of rubber cloth, substantially as shown anddescribed.

5. A platen for a type-writing machine, consisting. of an interior core,a sheath or cover, and a sound-deadening filling intermediate the coreand the sheath or cover and in contact with both.

In testimony that I claim the foregoing as my invention I have signed myname, in pres ence of two witnesses, this 31st day of March,

HORATIO G. WOOD. Witnesses:

BENJAMIN MARSH, 2d, 0. MELVILLE.

